This old hen is happier than a dead pig in the sunshine.
When a pig dies, presumably in a sty outside, the sun dries out its skin. This effect pulls the pig’s lips back to reveal a toothy “grin,” making it look happy even though it’s dead. This phrase describes a person who’s blissfully ignorant of reality.

From Fox News: As Rep. Steve Scalise lay in his hospital bed recovering after he was shot by a maniac gunman who was hunting congressional Republicans, an MSNBC host asked whether the House Majority Whip’s life-threatening injuries meant Americans had to “ignore” his political positions.

Joy Ann Reid on Saturday cited Scalise’s positions on ObamaCare and gay marriage as among the concerning “moral” issues she felt couldn’t be overlooked despite his critical injury at the hands of a left-leaning lunatic who opened fire at a GOP baseball practice on June 14.

“There’s a whole country out there and a lot of people, at least in my Twitter timeline, and it’s a delicate thing, because everybody is wishing the congressman well and hoping that he recovers, but Steve Scalise has a history that we’ve all been forced to sort…